MySQL server has gone away SQL query : select c.*,p.identifier,p.reference, pr.productID,pr_p.thumbnail, DATE_FORMAT(c.dated,'%d.%m.%Y %H:%i') AS dated from CT_comments c left join CT_pages p on c.page_id=p.id left join SS_products pr on p.identifier=pr.productID left join SS_product_pictures pr_p on pr.default_picture=pr_p.photoID where is_approved=1  order by rand() limit 20